/Engine/Source/Runtime/Engine/Classes/Engine/GameInstance.h
Adds a new player.
The player which was created.
[ULocalPlayer](API\Runtime\Engine\Engine\ULocalPlayer) * CreateLocalPlayer ( [FPlatformUserId](API\Runtime\Core\Misc\FPlatformUserId) UserId, [FString](API\Runtime\Core\Containers\FString) & OutError, bool bSpawnPlayerController )